2 * Copyright (C) 2004-2006 Atmel Corporation
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <stdio_dev.h>
29 #ifdef CONFIG_BITBANGMII
33 #include <asm/initcalls.h>
34 #include <asm/sections.h>
35 #include <asm/arch/mmu.h>
37 #ifndef CONFIG_IDENT_STRING
38 #define CONFIG_IDENT_STRING ""
41 DECLARE_GLOBAL_DATA_PTR;
43 unsigned long monitor_flash_len;
45 /* Weak aliases for optional board functions */
46 static int __do_nothing(void)
50 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
51 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
53 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
54 #include <asm/arch/cacheflush.h>
57 static unsigned long dma_alloc_start;
58 static unsigned long dma_alloc_end;
59 static unsigned long dma_alloc_brk;
61 static void dma_alloc_init(void)
63 unsigned long monitor_addr;
65 monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
66 dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
67 dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
68 dma_alloc_brk = dma_alloc_start;
70 printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
71 dma_alloc_start, dma_alloc_end);
73 dcache_invalidate_range(cached(dma_alloc_start),
74 dma_alloc_end - dma_alloc_start);
77 void *dma_alloc_coherent(size_t len, unsigned long *handle)
79 unsigned long paddr = dma_alloc_brk;
81 if (dma_alloc_brk + len > dma_alloc_end)
84 dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
85 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
88 return uncached(paddr);
91 static inline void dma_alloc_init(void)
97 static int init_baudrate(void)
102 i = getenv_f("baudrate", tmp, sizeof(tmp));
104 gd->baudrate = simple_strtoul(tmp, NULL, 10);
106 gd->baudrate = CONFIG_BAUDRATE;
112 static int display_banner (void)
114 printf ("\n\n%s\n\n", version_string);
115 printf ("U-Boot code: %08lx -> %08lx data: %08lx -> %08lx\n",
116 (unsigned long)_text, (unsigned long)_etext,
117 (unsigned long)_data, (unsigned long)__bss_end__);
126 static int display_dram_config (void)
130 puts ("DRAM Configuration:\n");
132 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
133 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
134 print_size (gd->bd->bi_dram[i].size, "\n");
140 static void display_flash_config (void)
143 print_size(gd->bd->bi_flashsize, " ");
144 printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
147 void board_init_f(ulong board_type)
152 unsigned long *new_sp;
153 unsigned long monitor_len;
154 unsigned long monitor_addr;
158 /* Initialize the global data pointer */
159 memset(&gd_data, 0, sizeof(gd_data));
162 /* Perform initialization sequence */
163 board_early_init_f();
165 board_postclk_init();
171 sdram_size = initdram(board_type);
173 /* If we have no SDRAM, we can't go on */
175 panic("No working SDRAM available\n");
178 * Now that we have DRAM mapped and working, we can
179 * relocate the code and continue running from DRAM.
181 * Reserve memory at end of RAM for (top down in that order):
183 * - heap for malloc()
184 * - board info struct
185 * - global data struct
188 addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
189 monitor_len = __bss_end__ - _text;
192 * Reserve memory for u-boot code, data and bss.
193 * Round down to next 4 kB limit.
196 addr &= ~(4096UL - 1);
199 /* Reserve memory for malloc() */
200 addr -= CONFIG_SYS_MALLOC_LEN;
202 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
203 /* Reserve DMA memory (must be cache aligned) */
204 addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
205 addr -= CONFIG_SYS_DMA_ALLOC_LEN;
209 #ifdef CONFIG_FB_ADDR
210 printf("LCD: Frame buffer allocated at preset 0x%08x\n",
212 gd->fb_base = (void *)CONFIG_FB_ADDR;
214 addr = lcd_setmem(addr);
215 printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
216 gd->fb_base = (void *)addr;
217 #endif /* CONFIG_FB_ADDR */
218 #endif /* CONFIG_LCD */
220 /* Allocate a Board Info struct on a word boundary */
221 addr -= sizeof(bd_t);
223 gd->bd = bd = (bd_t *)addr;
225 /* Allocate a new global data copy on a 8-byte boundary. */
226 addr -= sizeof(gd_t);
228 new_gd = (gd_t *)addr;
230 /* And finally, a new, bigger stack. */
231 new_sp = (unsigned long *)addr;
232 gd->stack_end = addr;
237 * Initialize the board information struct with the
238 * information we have.
240 bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
241 bd->bi_dram[0].size = sdram_size;
242 bd->bi_baudrate = gd->baudrate;
244 memcpy(new_gd, gd, sizeof(gd_t));
246 relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
249 void board_init_r(gd_t *new_gd, ulong dest_addr)
251 extern void malloc_bin_reloc (void);
252 #ifndef CONFIG_ENV_IS_NOWHERE
253 extern char * env_name_spec;
261 gd->flags |= GD_FLG_RELOC;
262 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
264 /* Enable the MMU so that we can keep u-boot simple */
265 mmu_init_r(dest_addr);
267 board_early_init_r();
269 monitor_flash_len = _edata - _text;
271 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
273 * We have to relocate the command table manually
275 fixup_cmdtable(&__u_boot_cmd_start,
276 (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
277 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
279 /* there are some other pointer constants we must deal with */
280 #ifndef CONFIG_ENV_IS_NOWHERE
281 env_name_spec += gd->reloc_off;
286 /* The malloc area is right below the monitor image in RAM */
287 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
288 CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
294 bd->bi_flashstart = 0;
295 bd->bi_flashsize = 0;
296 bd->bi_flashoffset = 0;
298 #ifndef CONFIG_SYS_NO_FLASH
299 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
300 bd->bi_flashsize = flash_init();
301 bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
303 if (bd->bi_flashsize)
304 display_flash_config();
307 if (bd->bi_dram[0].size)
308 display_dram_config();
310 gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
311 if (!gd->bd->bi_boot_params)
312 puts("WARNING: Cannot allocate space for boot parameters\n");
314 /* initialize environment */
317 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
323 s = getenv("loadaddr");
325 load_addr = simple_strtoul(s, NULL, 16);
327 #ifdef CONFIG_BITBANGMII
330 #if defined(CONFIG_CMD_NET)
331 s = getenv("bootfile");
333 copy_filename(BootFile, s, sizeof(BootFile));
334 #if defined(CONFIG_NET_MULTI)
337 eth_initialize(gd->bd);